Peritoneal carcinomatosis in germ-cell tumor - Relations with retroperitoneal lymph node dissection

Peritoneal carcinomatosis from germ-cell tumor has rarely been described, a nd thus remains largely unknown. We report here five cases involving this e ntity. All five patients had embryonal carcinoma in their primary germ-cell tumor. Four of them had undergone retroperitoneal lymph node dissection (R PLND), and viable malignant cells were found. RPLND was performed for relap ses (n = 3) and as primary therapy for stage n: disease (n = 1). The perito neum was the only site of relapse in three patients, and was associated wit h pleural effusion in one. The time to relapse after RPLND ranged from 6 to 14 months. One patient sustained injury to lymph nodes during RPLND, and a nother patient had a peritoneal xanthelasma. The only three patients alread y described in the literature underwent RPLND or surgical biopsy. All these observations suggest a striking relation between RPLND and occurrence of s ubsequent peritoneal carcinomatosis.